Introduction to Data Interpretation

Introduction to Data Interpretation

Easy Questions
Moderate Questions
Difficult Questions

Data Interpretation

Introduction to Data Interpretation
Table chart
Line chart
Pie chart
Bar graph
Mixed Graph
Data Sufficiency

Direction: Study the following histogram of marks in mathematics (out of 50) of students in a class and answer the following questions.

  1. If the students have got the marks out of 50 and if A+ grade has been declared for above 90%, then the number of students who have got A+ grade is :








  1. View Hint View Answer Discuss in Forum

    On the basis of given graph in question ,
    Number of students who score more than 90% = class – interval 45 – 50 = 10

    Correct Option: A

    On the basis of given graph in question ,
    Number of students who score more than 90% = class – interval 45 – 50 = 10
    Therefore , correct answer is option A.

  1. The percentage of number of passed students is (31 is the pass marks)








  1. View Hint View Answer Discuss in Forum

    From the given above histogram , we can see
    Total students ⇒ 135
    Successful students ⇒ 20 + 40 + 50 + 10 = 120

    ∴ Required percent =
    120
    		× 100
    35


    Correct Option: D

    From the given above histogram , we can see
    Total students ⇒ 135
    Successful students ⇒ 20 + 40 + 50 + 10 = 120

    ∴ Required percent =
    120
    		× 100
    35

    Required percent =
    800
    		= 88
    8
    		 %
    99

  1. The total number of students in the class is :








  1. View Hint View Answer Discuss in Forum

    From the given above histogram , we have
    Number of students in the class interval 25-30 = 15
    Number of students in the class interval 30-35 = 20
    Number of students in the class interval 35-40 = 40
    Number of students in the class interval 40-45 = 50
    Number of students in the class interval 45-50 = 10

    Correct Option: D

    From the given above histogram , we have
    Number of students in the class interval 25-30 = 15
    Number of students in the class interval 30-35 = 20
    Number of students in the class interval 35-40 = 40
    Number of students in the class interval 40-45 = 50
    Number of students in the class interval 45-50 = 10
    Total students in the class ⇒ 15 + 20 + 40 + 50 + 10 = 135

  1. If the pass marks in maths is 31, the number of students who failed in maths is :








  1. View Hint View Answer Discuss in Forum

    As per the given question , we can say that If the pass marks in maths is 31, the number of students who failed in maths class-interval 25–30 = 15

    Correct Option: B

    As per the given question , we can say that If the pass marks in maths is 31, the number of students who failed in maths class-interval 25–30 = 15
    Therefore , required answer is 15 .

Direction: Study the following histogram of wage distribution of different number of workers and answer the given questions.

  1. The percentage of workers who earn between Rs. 950 to Rs. 960 is








  1. View Hint View Answer Discuss in Forum

    On the basis of given graph in question ,
    Number of workers who earn between Rs. 950 to Rs.960 = 10
    Total number of workers surveyed = 3 + 2 + 4 + 9 + 5 + 10 + 5 + 3 + 3 + 5 = 49

    Required percentage =
    Number of workers who earn between Rs. 950 to Rs.960
    		 × 100 %
    Total number of workers surveyed

    Correct Option: B

    On the basis of given graph in question ,
    Number of workers who earn between Rs. 950 to Rs.960 = 10
    Total number of workers surveyed = 3 + 2 + 4 + 9 + 5 + 10 + 5 + 3 + 3 + 5 = 49

    Required percentage =
    Number of workers who earn between Rs. 950 to Rs.960
    		 × 100 %
    Total number of workers surveyed

    Required percentage =
    10
    		× 100 = 20.4%
    49